KR102316191B1 - Apparatus and method for simulating monopulse signal - Google Patents

Abstract

According to one embodiment of the present invention, an apparatus for simulating a mono-pulse signal includes: a mono-pulse simulation signal input part receiving a reference RF signal from signal generation equipment; a mono-pulse simulation signal distribution part including a plurality of signal distributors; a mono-pulse simulation signal antenna simulation part including a plurality of signal attenuators; a mono-pulse simulation signal direction simulation part including a plurality of phase converters; a mono-pulse simulation signal output part outputting a simulation signal to a mono-pulse receiver; and a mono-pulse simulation signal control part distributing the reference RF signal to a plurality of RF signals through the signal distributors, attenuating a signal size ratio between the RF signals based on directions of the RF signals and a predetermined reference direction through the signal attenuators, converting phases of the attenuated RF signals based on the reference direction and a phase difference between the RF signals with the attenuated signal size ratio through the phase converters, and outputting the RF signals with the converted phases to the mono-pulse receiver as the simulation signal through the mono-pulse simulation signal output part. Therefore, the present invention is capable of checking and reinforcing the function and performance of a mono-pulse receiver.

Description

Apparatus and method for simulating monopulse signal

The present invention relates to signal simulation, and more particularly, to an apparatus and method for simulating a monopulse signal.

In general, a monopulse tracking device includes a monopulse antenna, a monopulse comparator, a monopulse receiver and a driver. Such a monopulse tracking apparatus is utilized in various applications for tracking a target signal. Depending on the purpose of the application, a monopulse receiver has been developed and used as a single channel, two channels, or three channels.

Since the function and performance of such a monopulse receiver are tested and measured using a monopulse antenna, a monopulse comparator, and a driver, it can be confirmed only after the development of the monopulse antenna, monopulse comparator and driver is completed. That is, the function and performance of the monopulse receiver can be confirmed only after the monopulse antenna, the monopulse comparator, and the driver are integrated. As such, there was no way to check and supplement the functions and performance of the monopulse receiver before system integration.

In addition, when the problems identified in the monopulse receiver are supplemented after system integration, the effect may have an effect on the monopulse antenna, the monopulse comparator, and the driver. In this case, the cost for re-adjusting the monopulse antenna, the monopulse comparator, and the driving unit may occur or the development schedule may be lengthened.

Therefore, compared to other components of the monopulse tracking device (for example, monopulse antenna, monopulse comparator and driving unit), the development cost and schedule can be reduced by easily checking the function and performance of the monopulse receiver, which has a relatively short development cost and development period. The need for measures to reduce the cost has emerged.

An embodiment of the present invention proposes an apparatus and method for simulating a monopulse signal.

In addition, an embodiment of the present invention proposes an apparatus and method for simulating a monopulse signal that can easily check the function and performance of a monopulse receiver.

According to an embodiment of the present invention, an apparatus for simulating a monopulse signal includes: a monopulse simulation signal input unit for receiving a reference RF signal from a signal generating device; a monopulse simulation signal distribution unit including a plurality of signal distributors; A monopulse simulation signal antenna simulator including a plurality of signal attenuators: a monopulse simulation signal direction simulator including a plurality of phase shifters; a monopulse simulation signal output unit for outputting a simulation signal to the monopulse receiver; and dividing the reference RF signal into a plurality of RF signals through the signal dividers, and attenuating a signal magnitude ratio between the RF signals based on directions of the RF signals and a predetermined reference direction through the signal attenuators. , the phases of the attenuated RF signals are converted based on the reference direction and the phase difference between the RF signals whose signal magnitude ratio is attenuated through the phase converters, and the phases are converted through the monopulse simulation signal output unit and a monopulse simulation signal controller for outputting RF signals to the monopulse receiver as the simulation signal.

According to an embodiment of the present invention, a method for simulating a monopulse signal includes: a monopulse simulation signal controller dividing a reference RF signal into a plurality of RF signals through a plurality of signal distributors of the monopulse simulation signal input unit; attenuating, by the monopulse simulation signal control unit, a signal magnitude ratio between the RF signals based on directions of the RF signals and a predetermined reference direction through a plurality of signal attenuators of the monopulse simulation signal antenna simulation unit; The monopulse simulation signal control unit converts the phases of the attenuated RF signals based on a phase difference between the RF signals whose signal magnitude ratio is attenuated and the reference direction through a plurality of phase converters of the monopulse simulation signal antenna simulation unit process; and outputting, by the monopulse simulation signal control unit, the phase-converted RF signals as a simulation signal to the monopulse receiver through the monopulse simulation signal output unit.

According to an embodiment of the present invention, the function and performance of the monopulse receiver can be checked and supplemented before system integration by simulating a monopulse signal that can easily check the function and performance of the monopulse receiver.

In addition, an embodiment of the present invention simulates a monopulse signal that can easily check the function and performance of a monopulse receiver, thereby reducing the development cost and period incurred to readjust other components after system integration.

1 is a block diagram of a monopulse signal simulation system according to an embodiment of the present invention.
2 is a diagram illustrating a concept of simulating a monopulse signal according to an embodiment of the present invention.
3 is a block diagram of a monopulse signal simulation apparatus 101 according to an embodiment of the present invention.
4 is a diagram illustrating an antenna pattern designed in a monopulse tracking apparatus according to an embodiment of the present invention.
5 is a flowchart for simulating a monopulse signal in the apparatus 101 for simulating a monopulse signal according to an embodiment of the present invention.

Terms used in this specification will be briefly described, and the present invention will be described in detail.

Terms used in the embodiments of the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, which may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, etc. . In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

Embodiments of the present invention can apply various transformations and can have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the scope of the specific embodiments, and it should be understood to include all transformations, equivalents and substitutes included in the spirit and scope of the invention. In describing the embodiments, if it is determined that a detailed description of a related known technology may obscure the subject matter, the detailed description thereof will be omitted.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprises" or "consisting of" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, and are intended to indicate that one or more other It is to be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.

In an embodiment of the present invention, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software, or a combination of hardware and software. In addition, a plurality of 'modules' or a plurality of 'units' are integrated into at least one module except for 'modules' or 'units' that need to be implemented with specific hardware and are implemented with at least one processor (not shown). can be

In an embodiment of the present invention, when a part is "connected" with another part, it is not only "directly connected" but also "electrically connected" with another element interposed therebetween. also includes In addition, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

1 is a block diagram of a monopulse signal simulation system according to an embodiment of the present invention.

Referring to FIG. 1 , the monopulse signal simulation system includes a monopulse signal simulation device 101 and a monopulse receiver 103 .

Looking at each component, the monopulse signal simulation apparatus 101 generates a monopulse simulation signal by simulating the monopulse signal in order to check the function and performance of the monopulse receiver 103 . And the monopulse signal simulation device 101 transmits the generated monopulse simulation signal to the monopulse receiver 103 .

The monopulse receiver 103 receives a monopulse simulated signal from the monopulse signal simulation device 101, and operates the monopulse receiver 103 using the received monopulse simulated signal to function of the monopulse receiver 103. and check performance.

Meanwhile, generating a monopulse signal for monopulse tracking is the same as the concept of generating a monopulse signal shown in FIG. 2 . That is, the concept of generating a monopulse signal is to convert the signals (205, 207) of the channels received from the multi-feed horn having a squint to Majic-T, Hybrid Ring Juction, and Hybrid 180° including parts such as Using the monopulse comparators 201 and 203 , a monopulse sum signal 209 is generated in phase and a difference signal 211 is generated in antiphase.

The monopulse signal simulation apparatus 101 according to an embodiment of the present invention can simulate the concept of generating a monopulse signal using a signal divider, a signal attenuator, a phase converter, and a control unit based on this principle. From now on, the monopulse signal simulation apparatus 101 will be described in detail with reference to FIG. 3 .

3 is a block diagram of a monopulse signal simulation apparatus 101 according to an embodiment of the present invention. The monopulse signal simulator 101 is applicable regardless of whether the frequency is an RF band or the monopulse receiver 103 is a single, two-channel, or three-channel receiver. In the present invention, in order to briefly explain the operation, the frequency will be described as an example of an X-band band. For example, the X-band band may represent a super high frequency (SHF) band of 8 to 12 GHz.

3, the monopulse signal simulation apparatus 101 includes a monopulse signal simulation control unit 301, a monopulse simulation signal input unit 303, a monopulse simulation signal distribution unit 305, and a monopulse simulation signal antenna simulation unit. 307 , a monopulse simulation signal direction simulation unit 309 and a monopulse simulation signal output unit 311 .

Looking at each component, the monopulse simulation signal input unit 303 receives a reference RF signal necessary for the operation of the monopulse signal simulation apparatus 101 from the outside. For example, the reference RF signal may represent an RF signal corresponding to the operating frequency of the monopulse tracking device under development. For example, the reference RF signal may be input from a commercially available signal generating device.

The monopulse simulation signal distribution unit 305 simulates the multi-feed horn of the monopulse antenna of the monopulse tracking device. For example, the monopulse simulation signal distribution unit 305 combines the reference RF signal with the sum channel, the difference channel (azimuth), and the difference channel (elevation angle) to simulate the multi-feed horn of the monopulse antenna simultaneously tracking the azimuth and elevation angles. It may include a plurality of signal dividers that distribute to three signals of . For example, specifications of a plurality of signal dividers applicable to the X-band band may be as shown in Table 1.

The monopulse simulation signal antenna simulator 307 simulates the magnitude of the sum or difference signal passing through the monopulse comparator of the monopulse tracking device. For example, the monopulse simulation signal antenna simulation unit 307 is a signal between the sum signal and the difference signal of the tracking angle range with respect to the reference direction (Boresight) with respect to the azimuth or elevation direction to simulate the magnitude of the sum or difference signal. It can include multiple signal attenuators to simulate the magnitude ratio (signal direction error). For example, specifications of a plurality of signal attenuators applicable to the X-band band may be as shown in Table 2 below.

The monopulse simulation signal direction simulation unit 309 simulates the phase of the sum or difference signal passing through the monopulse comparator of the monopulse tracking device. For example, when the phase difference between the sum signal and the difference signal is in the + direction with respect to the reference direction, the monopulse simulation signal direction simulation unit 309 may simulate the phase of the difference signal as the same phase. In addition, the monopulse simulation signal direction simulation unit 309 may simulate the phase of the difference signal as the opposite phase when the phase difference between the sum signal and the difference signal is in the negative direction with respect to the reference direction. At this time, the monopulse simulation signal direction simulation unit 309 reflects the phase value of the monopulse signal simulation path according to the frequency to the phase of the sum or difference signal along the + direction or the - direction through a plurality of phase converters to in-phase Alternatively, it can be simulated out of phase. For example, specifications of a plurality of phase shifters applicable to the X-band band may be as shown in Table 3 below.

The monopulse simulation signal output unit 311 receives a simulation signal from the monopulse simulation signal direction simulation unit 309 and transmits the received simulation signal to the monopulse receiver 103 . For example, when the monopulse receiver 103 has 3 channels, the simulation signal may include a sum signal and difference signals (eg, a difference signal (azimuth) and a difference signal (elevation).

The AC/DC converter (not shown) converts the AC power supplied from the monopulse simulation signal input unit into DC power, and converts the converted DC power to the monopulse control unit 301, the monopulse simulation signal distribution unit 305 and the mono It is supplied to the pulse simulation signal antenna simulation unit 307 and the monopulse simulation signal direction simulation unit 309 .

The monopulse simulation signal control unit 301 controls the overall operation of the monopulse signal simulation apparatus 101 . In more detail, the monopulse simulation signal control unit 301 stores and manages a monopulse simulation pattern for simulating a monopulse antenna. In addition, the monopulse simulation signal control unit 301 simulates a plurality of signal attenuators and the monopulse simulation signal direction of the monopulse simulation signal antenna simulation unit 307 to control the characteristics of the sum or difference signal according to the stored monopulse simulation pattern. Controls a plurality of phase shifters of the unit 309 . In addition, the monopulse simulation signal control unit 301 may analyze the function and performance verification result of the monopulse receiver 103 in conjunction with the monopulse receiver 103 as a test target. The communication interface between the monopulse simulation signal control unit 301 and the monopulse receiver 103 may be any communication interface. For example, any communication interface may be an RS-232 communication interface.

For example, the monopulse simulation signal controller 301 may perform the following procedure to generate a monopulse simulation signal.

First, the monopulse simulation signal controller 301 may set a frequency to be simulated. For example, the corresponding frequency may be determined within the X-band band.

Second, the monopulse simulation signal control unit 301 calculates the simulated signal output strength. For example, the simulated signal output strength may be controlled through a user input or a distance calculation based on global positioning system (GPS) location information.

For example, the simulated signal output strength by the user input may be calculated and controlled based on the reception level of the channel of the sum signal. For example, the control level may be calculated using Equation 1 as follows.

For example, the simulated signal output strength based on GPS location information may be calculated and controlled using an arbitrary path having the location information of the target and the monopulse signal simulation device 101 .

For example, the monopulse simulation signal controller 301 may calculate an arbitrary path using Equation 2 below.

은 1 -

이다. 타겟 위치[위도, 경도, 고도]는 [

,

,

]이며, 모노펄스 신호모의 장치(101) 위치[위도, 경도, 고도]는 [

,

,

]이다. where a is the Earth's long radius of 6,378,138 m, b is the Earth's shortest radius of 6,356,752.3 m,

Silver 1 -

am. The target location [latitude, longitude, altitude] is [

,

,

], and the monopulse signal simulation device 101 location [latitude, longitude, altitude] is [

,

,

]am.

In addition, the monopulse simulation signal control unit 301 may calculate a direction vector from the target to the monopulse signal simulation apparatus 101 using an arbitrary path calculated using Equation 3 below.

=

-

=

-

은 지구 중심에서 타겟까지의 방향벡터를 나타내며,

는 지구 중심에서 모노펄스 신호모의 장치(101)까지의 방향벡터를 나타내고,

는 타겟에서 모노펄스 신호모의 장치(101)까지의 방향벡터를 나타낸다.here,

represents the direction vector from the center of the earth to the target,

represents the direction vector from the center of the earth to the monopulse signal simulation device 101,

denotes a direction vector from the target to the monopulse signal simulation device 101 .

In addition, the monopulse simulation signal control unit 301 may calculate the mastery distance between the target and the monopulse signal simulator using Equation 4 below.

Here, d represents the mastery distance between the target and the monopulse signal simulator.

In addition, the monopulse simulation signal control unit 301 may calculate the free space loss between the target and the monopulse signal simulation apparatus using Equation 5 below.

Here, d represents the mastery distance between the target and the monopulse signal simulator.

In addition, the monopulse simulation signal control unit 301 may calculate a control level for setting the mono signal output strength using Equation 6 below.

Here, ERIP (dBm) is expressed as transmit antenna gain + transmit power - transmit system loss.

As described above, the monopulse simulation signal control unit 301 determines the simulated signal output strength using Equations 1 to 6.

Third, the monopulse simulation signal control unit 301 determines the form of the simulation signal. For example, the monopulse simulation signal control unit 301 may select the form of the simulation signal as continuous-wave modulation (CW).

Fourth, the monopulse simulation signal control unit 301 includes a plurality of signal attenuators of the monopulse simulation signal antenna simulation unit 307 and a plurality of monopulse simulation signal direction simulation units 309 to control the direction of the simulation signal. It is possible to control the phase shifters of

For example, when an arbitrary antenna pattern is input by a user or the antenna patterns 401 and 403 designed in the monopulse tracking system shown in FIG. According to this, it is possible to determine the desired direction for the simulation of the simulation signal. In addition, the monopulse simulation signal controller 301 may control signal attenuators to adjust the signal levels of the sum channel and the difference channel according to the determined direction.

For example, when the direction of the desired simulation signal (eg, sum or difference signal) is located in the + direction with respect to the reference direction, the monopulse simulation signal control unit 301 converts the desired simulation signal into in-phase through a phase converter. can be controlled with In addition, when the direction of the desired simulation signal is located in the - direction with respect to the reference direction, the monopulse simulation signal control unit 301 may control the desired simulation signal to be out of phase through a phase converter.

On the other hand, since the control value of in-phase or in-phase is based on the case where the control value of the phase converter is 0°, the monopulse simulation signal control unit 301 controls the sum channel of FIG. 3 in a state where the control value is set to 0°. , calculates each phase difference for each signal attenuator set value for the difference channel (azimuth) and the difference channel (elevation angle), and generates a table for each frequency including the calculated phase differences. In addition, the monopulse simulation signal control unit 301 determines a phase shifter control value using a table for each frequency, and changes the phase of the sum or difference signal through the phase shifter according to the determined phase shifter control value.

For example, when the direction of the desired simulation signal is located in the + direction with respect to the reference direction, the monopulse simulation signal control unit 301 may determine the phase shifter control value using Equation 7 below.

For example, the monopulse simulation signal control unit 301 may determine the phase shifter control value by using Equation (8) below when the direction of the desired simulation signal is located in the - direction with respect to the reference direction.

Through this configuration, in an embodiment of the present invention, the monopulse signal simulating device 101 simulates a monopulse signal and transmits it to the monopulse receiver, so that the monopulse receiver can depend on the frequency and antenna characteristics of the monopulse tracking device. Since the function and performance of the system are checked before system integration, the development cost and period of monopulse tracking device can be reduced.

On the other hand, the squint of the monopulse tracking device determines the tracking accuracy and tracking range. However, in an embodiment of the present invention, the monopulse signal simulation device 101 is a device capable of simulating any and all antenna patterns regardless of squint. The pattern is used to generate a simulated monopulse signal similar to the real one. Therefore, the monopulse signal simulation device 101 can check the function and tracking accuracy of the monopulse tracking device. That is, it is possible to greatly reduce the effort required for the repetition of design-test-manufacturing of the monopulse signal simulation apparatus 101 .

And in an embodiment of the present invention, when the monopulse signal simulation device 101 simulates an arbitrary monopulse signal and transmits it to the monopulse receiver, the simulation is possible in conjunction with the PID driving mechanism of the antenna driver of the monopulse receiver, so the antenna You can check the performance parameters of the driving unit.

In addition, in an embodiment of the present invention, since the monopulse signal simulator 101 is composed of a signal divider, a signal attenuator and a phase converter of general specifications, the monopulse signal simulator 101 is easy to develop and implement at a low cost. Because it is possible, the trial error of monopulse receiver development can be greatly reduced.

5 is a flowchart for simulating a monopulse signal in the apparatus 101 for simulating a monopulse signal according to an embodiment of the present invention.

Referring to FIG. 5 , the monopulse simulation signal control unit 301 of the monopulse signal simulation apparatus 101 receives a reference RF signal from the signal generating equipment through the monopulse simulation signal input unit 303 in step 501 . For example, the reference RF signal may represent an RF signal corresponding to the operating frequency of the monopulse tracking device under development.

In step 503, the monopulse simulation signal control unit 301 converts the reference RF signal into a plurality of RF signals through a plurality of signal distributors of the monopulse simulation signal distribution unit 305 to simulate the multi-feed horn of the monopulse antenna. distribute For example, the plurality of RF signals may be RF signals for generating a sum signal that is a simulation signal, a difference signal (azimuth), and a difference signal (elevation angle).

In step 505, the monopulse simulation signal control unit 301 distributes the RF signal through a plurality of signal attenuators of the monopulse simulation signal antenna simulation unit 307 to simulate the magnitude of the sum or difference signal that has passed through the monopulse comparator. Attenuates the signal amplitude ratio between them. For example, the monopulse simulation signal control unit 301 uses a plurality of signal attenuators.

With respect to the direction of the difference signal (azimuth) or the difference signal (elevation angle), a signal magnitude ratio (signal direction error) between the sum signal of the tracking angle range and the difference signal with respect to the reference direction may be attenuated.

In step 507, the monopulse simulation signal control unit 301 is an RF signal attenuated through a plurality of phase converters of the monopulse simulation signal direction simulation unit 309 to simulate the phase of the sum or difference signal that has passed through the monopulse comparator. transform their phases. For example, when the phase difference between the sum signal and the difference signal is in the + direction with respect to the reference direction, the monopulse simulation signal control unit 301 may simulate the phase of the difference signal in phase through one of the phase converters. have. In addition, when the phase difference between the sum signal and the difference signal is in the negative direction with respect to the reference direction, the monopulse simulation signal control unit 301 may simulate the phase of the difference signal as an inverse phase through one of the phase converters.

In step 509 , the monopulse simulation signal control unit 301 transmits the phase-converted RF signals to the monopulse receiver through the monopulse simulation signal output unit 311 . For example, the phase-transformed RF signals may be simulated signals. For example, when the monopulse receiver 103 has 3 channels, the simulation signal may include a sum signal and difference signals (eg, a difference signal (azimuth) and a difference signal (elevation).

Through this process, an embodiment of the present invention can check and supplement the function and performance of the monopulse receiver before system integration by simulating a monopulse signal that can easily check the function and performance of the monopulse receiver. In addition, an embodiment of the present invention simulates a monopulse signal that can easily check the function and performance of a monopulse receiver, thereby reducing the development cost and period incurred to readjust other components after system integration.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

101: monopulse signal simulator 103: monopulse receiver
201, 203: monopulse comparators 205, 207: multiple feed horn channel signals
209: 211: monopulse signals 301: monopulse signal simulation control unit
303: monopulse signal simulation input unit 305: monopulse signal simulation distribution unit
307: monopulse signal simulation antenna simulation unit
309: monopulse signal simulation direction simulation unit 311: monopulse signal simulation output unit

Claims (6)

a monopulse simulation signal input unit receiving a reference RF signal from a signal generating device;
a monopulse simulation signal distribution unit including a plurality of signal distributors;
A monopulse simulation signal antenna simulator including a plurality of signal attenuators:
a monopulse simulation signal direction simulation unit including a plurality of phase shifters;
a monopulse simulation signal output unit for outputting a simulation signal to a monopulse receiver; and
divides the reference RF signal into a plurality of RF signals through the signal dividers, and attenuates a signal magnitude ratio between the RF signals based on directions of the RF signals and a predetermined reference direction through the signal attenuators, The phases of the attenuated RF signals are converted based on the reference direction and the phase difference between the RF signals whose signal magnitude ratio is attenuated through the phase converters, and the phases are converted through the monopulse simulation signal output unit. and a monopulse simulation signal control unit for outputting signals to the monopulse receiver as the simulation signal,
The reference RF signal is an RF signal corresponding to the operating frequency of the monopulse tracking device,
The simulation signal includes a sum signal, a difference signal (azimuth), and a difference signal (elevation angle),
The monopulse simulation signal control unit determines the direction of the simulation signal, and considers the phase difference between the direction of the simulation signal and the sum signal, the difference signal (azimuth), and the difference signal (elevation angle). and controlling the phase shifters according to the phase shifter control value to change the phase of the sum signal or the difference signal,
The monopulse simulation signal control unit calculates a control level for determining the output strength of the simulation signal using the following equation.
<Equation x>

delete According to claim 1,
The monopulse simulation signal controller is an apparatus for simulating a monopulse signal, characterized in that determining the phase converter control value using the following equation.
<Equation y>
When the direction of the simulation signal is + direction with respect to the reference direction,

When the direction of the simulation signal is - direction with respect to the reference direction,

a process in which the monopulse simulation signal controller divides the reference RF signal into a plurality of RF signals through the plurality of signal distributors of the monopulse simulation signal input unit;
attenuating, by the monopulse simulation signal control unit, a signal magnitude ratio between the RF signals based on directions of the RF signals and a predetermined reference direction through a plurality of signal attenuators of the monopulse simulation signal antenna simulation unit;
The monopulse simulation signal control unit converts the phases of the attenuated RF signals based on a phase difference between the RF signals whose signal magnitude ratio is attenuated and the reference direction through a plurality of phase converters of the monopulse simulation signal antenna simulation unit. process; and
and outputting, by the monopulse simulation signal control unit, the phase-converted RF signals as a simulation signal to a monopulse receiver through a monopulse simulation signal output unit,
The reference RF signal is an RF signal corresponding to the operating frequency of the monopulse tracking device,
The simulation signal includes a sum signal, a difference signal (azimuth), and a difference signal (elevation angle),
The process of transforming the phases of the attenuated RF signals,
determining the direction of the simulation signal;
determining a phase converter control value in consideration of the direction of the simulation signal, the phase difference between the sum signal, the difference signal (azimuth), and the difference signal (elevation angle); and
changing the phase of the sum signal or the difference signal by controlling the phase shifters according to the phase shifter control value,
A method for simulating a monopulse signal, characterized in that the control level for determining the output strength of the simulation signal is calculated using the following equation.
<Equation x>

delete 5. The method of claim 4,
The phase shifter control value is a method for simulating a monopulse signal, characterized in that determined using the following equation.
<Equation y>
When the direction of the simulation signal is + direction with respect to the reference direction,

When the direction of the simulation signal is - direction with respect to the reference direction,

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